| from a minimum amount of stock | 6 | other |
| by measuring column-cleaned seawater | 3 | manner |
| from a tube of the metal | 3 | other |
| blank → be → produced | 10 |
| blank → be → obtained | 5 |
| blank → be → determined | 3 |
| negative | neutral | positive |
| 0.092 | 0.804 | 0.104 |
| Raw frequency | 18 |
| Normalized frequency | 0.571 |
| Modifier score | 0.900 |
| Perplexity | 179.330 |